首页
登录
职称英语
There are 30 students in a class. 12 of them play basketball, 15 of them play fo
There are 30 students in a class. 12 of them play basketball, 15 of them play fo
游客
2024-01-12
44
管理
问题
There are 30 students in a class. 12 of them play basketball, 15 of them play football, and 19 of them play pingpang. If 7 of them play all three activities and exactly 6 of them play two activities, how many of them play none of the three activities?
选项
A、2
B、0
C、8
D、4
E、6
答案
D
解析
设玩三种运动的人分别为A,B,C,A=12,B=15,C=19,7个人三种运动都玩,那么P=7,6个人玩两种运动,那么m=6,代入公式:30=12+15+19-6-2×7+N,得到N=4,选择D。
转载请注明原文地址:https://tihaiku.com/zcyy/3354936.html
相关试题推荐
Inahistoryclassthatconsistedof30students,thenumberofseniorswas3mo
Inagraduatingclassof236students,142tookalgebraand121tookchemistry.
Amongthe900spectatorsatafootballgame,therewasatotalofxstudentsfro
Jimscored95pointsin5basketballgamesforhisschool.Atthisrate,howman
Apollof2,000studentswastakenbeforeCentervilleCollegechangedthenam
Averageexpectedfamilycontribution(EFC)fordependentstudents,
Aschoolbushas10doubleseatsineachof2rows.Twostudentscansitineach
Jimscored95pointsin5basketballgamesforhisschool.Atthisrate,howman
Mr.Hernandez’sstudentsfilledoutasurveyaskinghowmanyhourseachstudent
Asubsandwichandasodaatabasketballgame’sconcessionstandcosts$3.40.A
随机试题
()房地产评估师()房地产经纪人[br]()销售经理()市场顾问A、D
Anormalconversationbetweenstrangersinvolvesmorethantalk.Italsoinv
Haveyoueverbeenafraidtotalkbackwhenyouweretreated【S1】______?Havey
[originaltext]Withgrowingnumbersofpeoplelivingalone,eitherbychoice
变形固体的基本假设主要有()。A.均匀性假设 B.连续性假设 C.各向同性
《变电评价管理规定》:()是指设备经受高温、雷电、冰冻、洪涝等自然灾害、外力破
“通过参与绩效管理活动,员工有何转变”属于绩效管理系统的总体评估内容的()A
()是指银行业金融机构总部对总部相关授信业务职能部门或直接管理的经营单位授予全
共用题干 张某用200万元自有资金一次性付款购买了一店铺用于出租经营,经营期为
投标价的编制中,关于其他项目费的说法正确的是()。A.暂列金额应按照招标工程量清
最新回复
(
0
)